Recently, there have been many studies that apply the panel unit-root test of Levin and Lin (1992) to support the validity of long-run purchasing power parity (PPP) for industrial countries. This paper applies two recently developed panel unit-root tests, provided by Im et al. (1995) and Maddala...

Empirical investigation based on consumer-price-index-based real interest rates is used to conclude that real interest rate parity is not supported. In this paper, the authors employ three panel-based unit-root tests, provided by Andrew Levin and Chien-Fu Lin (1992), Kyung So Im, Hashem M....

TThe objective of this paper is to test for the sustainability of the current account deficits in the U.S. and Canada over the 1973--1994 period. Using various unit root and cointegration tests some of which allow for structural changes, we conclude that the real current account deficits-to-GDP...